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Programmable transaction card

  • US 5,955,961 A
  • Filed: 09/25/1996
  • Issued: 09/21/1999
  • Est. Priority Date: 12/09/1991
  • Status: Expired due to Term
First Claim
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1. A method for communicating between a financial transaction authorization center and a holder of a transaction card so as to provide verification of the transaction card and to provide access to a selected one of a plurality of accounts, said method comprising the steps of:

  • selecting one of said plurality of accounts;

    generating within the transaction card an account number corresponding to said selected account;

    presenting said account number in a machine-readable form that is not discernible to the human eye for a predetermined period of time approximating a time required to complete a transaction;

    using a reader device to read the presented account number;

    after said predetermined period of time, supplying a signal to terminate said step of presenting the account number;

    transmitting said account number read by said reader device to said authorization center; and

    verifying said account number at said authorization center.

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